Discovery site
SUBLEVEL 4 / CORRIDOR N
2026.07.20
Predictive architectural threshold
The Borrowed Window
A window that appeared inside a sealed sublevel wall and displays familiar rooms, displaced observers, future events, and environments with no corresponding physical volume.
Wall depth
0.31 m
Observed depth
11.8 m
Vacancy limit
43 min
Evidence note
“Do not let it see an empty room.”
Assigned division
Boundary Phenomena Unit
Last observation
A second chair was visible. Only one has crossed.